Adjustable spanner or wrench



W. H.'BARACLOUGH.

ADJUSTABLE SPANNER 0R WRENCH.

APPLICATION FILED cT. al. 1919.

1,333,956. Patented Mar. 16, 1920.

WILLIAM HENRY BARACLOUGrI-I, OF BIRMINGHAM, ENGLAND.

ADJUSTABLE SPANNER OR WRENCH.

Specification of Letters Patent.

Patented Mar. 16, 1920.

Application filed October 3l, 1919. Serial No. 334,818.

To all whom t may concer/n.' y

Be it known that` I, IVILLIAM HENRY BA- nAcLoUsI-r, subject of KingGeorge V, Great Britain, residing at No. 295 Slade road, Erdington,Birmingham, England, have invented certain new and useful Improvementsin or Relating to Adjustable Spanners or Wrenches, of which thefollowing is a specification.

My invention relates to 'improvements in adjustable spanners orwrenches, and refers to those spanners or wrenches in which the one jawis adapted to slide along the lever or shank of the fixed jaw theadjustment being effected by means of a screw pinion and rackzand theobject of my improvements are to adord facilities for the movement ofthe sliding jaw easily and quickly to iit a nut or other object to begripped by taking the pinion out of gear with the rack on the shank ofthe fixed jaw, which enables the movable jaw to slide kfreely to and froon the said shank, and close on to a nut or other object, after which acloser adjustment of the jaws may be effected.

I attain these objects by the mechanism illustrated in the accompanyingdrawings, in which- Figure l, is a side elevation of a spanner or wrenchmade in accordance with my invention:

Fig. 2, is a plan of the top side, and- Fig. 3, a plan of the underside,

Fig. 4, is a transverse section of Fig. l,

Fig. 5, is a vertical section taken on the line aof Fig. 4l.

Fig. 6, a like section taken on the line c-(Z of Fig. 4. Fig. 7 is atransverse section showing the Spanner in position for sliding themovable jaw along the shank of the fixed jaw. Similar letters refer tosimilar parts throughout the several views.

The lever or hand-grip A, is made from a sheet steel blank having theoblique horn piece B-B, the neck part C, the two cutaway parts, ll-D.

This said blank is operated on by suitable tools to embrace thereinforcement piece or bracket F, and so shape or fashion it into theformation represented.

The reinforcement piece or bracket F consists of the two members G, G,and the oblique horn piece H, and the lugs I, adapted to pass throughslots previously cut in the aforesaid blank.

In operating on the aforesaid blank it is bent into the forn'iationshown in. the drawing to form the lever or hand-grip A. The neck part C,isbent over the reinforcement piece F, the lugs I pass through theslots, the two oblique horn pieces B, B, are closed down on to the hornpiece I-I. The parts are secured together by closing over the 'end ofthe lugs I.

The two members G-G, constitute bearings for the axle J, of the screwpinion K, which is of the ordinary form, and is free to rotate and meshwith the tooth rack R, of the shank l?. The pinion is arranged toprotrude slightly through the holes D,-D.

The saddle piece L, and the jaw M, are made up in one part; the cavityN, is shaped for the reception of the circular part of the oblique hornpart of the hand-grip; the tang part O, is adapted to take bearing onthe under side of the shank P; this said shank is of the ordinary kindfurnished with the rack R.

The hand-grip A, being fulcrumed to the l saddle piece at S, with theoblique horn against the back of the loose jaw M, will have a downwardmovement as shown at Fig. 7, and free to slide the saddle and loose jawto and fro` on the shank P, when a nut or other object may be gripped.

The hand-grip is then raised as shown at Figs. 1,- /l,- 5,- and G, thescrew pinion K, meshing with the teeth of the rack R, when a closeradjustment of the jaws 'may be effected by means of the pinion K, whichprotrudes slightly through the holes in the hand-grip.

I am aware that prior' to my invention adjustable spanners or wrencheshave been made in which the movable jaw has been operated by a screwpinion forming part of a longitudinal bar pivoted to the movable jaw,the pinion gearing with teeth formed on the back of the shank; andseveral forms in which the teeth are formed on the movable jaw andadapted to gear with those on the shank by means of a pivoted leve-r,and spring catch arrangement. I therefore do not claim such acombination broadly; but I claim;

1. In a wrench, the combination with a iiXed aw and shank carriedthereby and a rack formed on said shank, of a movable jaw slidable onsaid shank in relation to the fixed jaw, a hollow hand grip pivoted tosaid movable jaw, a bracket mounted in and substantially inclosed bysaid hand grip,

and a pinion rotatably supported by said bracket and designed to meshWith said rack.

2. In a Wrench, the Combination With aiixed jaw and shank carriedthereby and a rack formed on said shank, of a. movable jaw slidable onsaid shank in relation to the fixed jan", a hand grip comprising a bodyportion an intermediate neel; portion and an oblique horn portion, abracket embraced by the body portion oi the grip and having an obliquehorn portion alined with the oblique horn portion of the grip, a pin forpivotally supporting both said horn portions on the movable javv, and apinion rotatably supported by said bracket and designed to mesh withsaid rack. Y Y

3. In a Wrench, the combination With a iXed jaw member having a rackformed on the shank thereof, of a movable jaw rne1nber slidable on theshank in relation to the fixed vj aw, a hollow hand grip having aheadYpivoted in a cavity in said movable jaW said grip having apertures inits Sides, a bracket Within and substantially inolosed by Said grip, anda pinion ,rotatably supported by said bracket and protruding throughsaid apertures, said pinion being designed to mesh With said rack.

In testimony whereof I have affixed iny 30

